import axios from 'axios'
import { Message } from 'element-ui'
import router from '../router'
//请求拦截器,方便每次请求都带上token

axios.interceptors.request.use(config =>{
  //token如果存在,请求就存储token
  if(window.sessionStorage.getItem('tokenStr')){
    config.headers['Authorization'] = window.sessionStorage.getItem('tokenStr')
  }
  return config
},error =>{
  console.log(error)
})

//响应拦截器,判断状态码
axios.interceptors.response.use(success=>{//这里的success只是成功调到后端接口,并不包括业务逻辑等是否正确
  //业务逻辑正误判断
  if(success.status && success.status === 200){
    if(success.data.code === 500 || success.data.code === 401 || success.data.code === 403){//后端返回的响应
      Message.error({message: success.data.message})
      return //失败返回空
    }
    if(success.data.message) Message.success({message: success.data.message})
    return success.data//成功之后把对象返回出去
  }
},error=>{//后端接口调错了就把返回的错误信息返回
  if(error.response.code === 504 || error.response.code === 404)Message.error({message : '服务器寄了兄弟QAQ'})
  else if(error.response.code === 403)Message.error({message: '你的权限不够,请联系管理员!'})
  else if(error.response.code === 401){
    Message.error({message: '尚未登录!'})
    router.replace('/')//跳转到首页
  }else{
    if(error.response.data.message){
      Message.error({message: error.response.data.message})
    }else {
      Message.error({message: '遇到位置错误!'})
    }
  }
  return 
})

let base = ''//主机名

//json格式post请求发送封装
export const postRequest = (url, params) => {
  return axios({
    method: 'post',
    url: `${base}${url}`,
    data: params
  })
}

//json格式的put请求
export const putRequest = (url, params) => {
  return axios({
    method: 'put',
    url: `${base}${url}`,
    data: params
  })
}

//json格式的get请求
export const getRequest = (url, params) => {
  return axios({
    method: 'get',
    url: `${base}${url}`,
    data: params
  })
}

//json格式的delete请求
export const deleteRequest = (url, params) => {
  return axios({
    method: 'delete',
    url: `${base}${url}`,
    data: params
  })
}